Jealousy is one of the strongest human emotions, comparable with both love and hate. It's one of the most intense, destroying and painful emotions. However, oftentimes it's considered as a measure of love of one person to the other. Absence of jealousy is, on the contrary, considered as a sign of indifference. Thus when doubting, a person may use jealousy to examine love of the mate, trying to make him/her feel jealous.
But on the other hand jealousy may take a painful tint if it's caused not by real, but by imagined reasons. The strength of this feeling is also a sign of dependence on your mate. Whereas if you give your partner complete freedom and respect his/her interests, you bind him/her to yourself to a greater extent and create more trusting relationships.

To be a bit jealous is a norm. But there is a limit that shouldn't be broken. "Healthy" jealousy brings some diversity in family life, reminding each of us, how much we value our "half". But when it oversteps the